feat(java): implement Java SDK BDD tests with Cucumber

[ex172000]

Following patterns from Python/Go/Rust BDD implementations:

• Add Cucumber-based BDD test implementation for Java SDK
• Create step definitions for basic messaging scenarios
• Configure Docker environment with feature file copying via entrypoint
• Use classpath-based feature discovery with @suite annotations
• Add JUnit Platform Suite dependency for modern Cucumber integration
• Add Java support to run-bdd-tests.sh script

Java BDD Test Results (ubuntu24.04LTS, aarch64)

 ✔ Image bdd-java-bdd           Built                                                                                                                                                                      1.1s
 ✔ Image bdd-iggy-server        Built                                                                                                                                                                      1.1s
 ✔ Network bdd_iggy-bdd-network Created                                                                                                                                                                    0.0s
 ✔ Volume bdd_iggy_data         Created                                                                                                                                                                    0.0s
 ✔ Container bdd-iggy-server-1  Created                                                                                                                                                                    0.1s
 ✔ Container bdd-java-bdd-1     Created                                                                                                                                                                    0.0s
Attaching to java-bdd-1
Container bdd-iggy-server-1 Waiting
Container bdd-iggy-server-1 Healthy
java-bdd-1  | To honour the JVM settings for this build a single-use Daemon process will be forked. For more on this, please refer to https://docs.gradle.org/8.13/userguide/gradle_daemon.html#sec:disabling_the_daemon in the Gradle documentation.
java-bdd-1  | Daemon will be stopped at the end of the build
java-bdd-1  | > Task :java:buildSrc:checkKotlinGradlePluginConfigurationErrors SKIPPED
java-bdd-1  | > Task :java:buildSrc:generateExternalPluginSpecBuilders
java-bdd-1  | > Task :java:buildSrc:extractPrecompiledScriptPluginPlugins
java-bdd-1  | > Task :java:buildSrc:generateScriptPluginAdapters
java-bdd-1  | > Task :java:buildSrc:pluginDescriptors
java-bdd-1  | > Task :java:buildSrc:processResources
java-bdd-1  | > Task :java:buildSrc:compilePluginsBlocks
java-bdd-1  | > Task :java:buildSrc:generatePrecompiledScriptPluginAccessors
java-bdd-1  | > Task :java:buildSrc:compileKotlin
java-bdd-1  | > Task :java:buildSrc:compileJava NO-SOURCE
java-bdd-1  | > Task :java:buildSrc:compileGroovy NO-SOURCE
java-bdd-1  | > Task :java:buildSrc:classes
java-bdd-1  | > Task :java:buildSrc:jar
java-bdd-1  | > Task :compileJava NO-SOURCE
java-bdd-1  | > Task :processResources NO-SOURCE
java-bdd-1  | > Task :classes UP-TO-DATE
java-bdd-1  | > Task :processTestResources
java-bdd-1  |
java-bdd-1  | > Task :java:iggy:compileJava
java-bdd-1  | Note: /workspace/foreign/java/java-sdk/src/main/java/org/apache/iggy/client/async/tcp/AsyncTcpConnection.java uses or overrides a deprecated API.
java-bdd-1  | Note: Recompile with -Xlint:deprecation for details.
java-bdd-1  |
java-bdd-1  | > Task :java:iggy:processResources NO-SOURCE
java-bdd-1  | > Task :java:iggy:classes
java-bdd-1  | > Task :java:iggy:jar
java-bdd-1  | > Task :compileTestJava
java-bdd-1  | > Task :testClasses
java-bdd-1  | > Task :test
java-bdd-1  |
java-bdd-1  | [Incubating] Problems report is available at: file:///workspace/bdd/java/build/reports/problems/problems-report.html
java-bdd-1  |
java-bdd-1  | BUILD SUCCESSFUL in 58s
java-bdd-1  | 14 actionable tasks: 14 executed
java-bdd-1 exited with code 0
Aborting on container exit...
Container bdd-java-bdd-1 Stopping
Container bdd-java-bdd-1 Stopped
✅ BDD tests completed for: java
🧹  cleaning up containers & volumes…

[mmodzelewski]

@ex172000 thanks for the PR, that's a great start. Can you please include the BDD tests in the CI run?

[ex172000]

@ex172000 thanks for the PR, that's a great start. Can you please include the BDD tests in the CI run?

Sure, added the bdd-java target

[mmodzelewski]

@ex172000 Thanks for the updates. For the bdd tests to work, you'll need to update the script: scripts/run-bdd-tests.sh. If you have any questions on how to set up the CI properly, feel free to ping @hubcio :)

[ex172000]

@mmodzelewski yeah previously had the change locally but somehow didn't commit. Please check again when you have time, thx. @hubcio please also take a look, thx!!

[mmodzelewski]

@ex172000 all looks good now, the PR is merged, thanks again :)